Housing for a battery system, and battery system

Abstract

The invention relates to a housing (10) for a battery system (10) with a plurality of battery modules (34) each with at least one battery cell (36), wherein the housing (12) has a first housing half (14) and a second housing half (16), wherein the first housing half (14) has first guide structures (38) for positively locking fixing of the battery modules (34), and wherein the second housing half (16) has second guide structures (44) for positively locking fixing of the battery modules (34). The invention also relates to a battery system (10).

Description

[0001] Housing for a battery system and battery system

[0002] The invention relates to a housing for a battery system according to claim 1. The invention further relates to a battery system according to claim 19.

[0003] A battery system typically comprises at least one rechargeable battery cell (also called an accumulator) and is used to supply power to electrical devices in various applications without a connection to the power grid. Possible applications for such battery systems include the construction industry, maintenance and installation services, mobile catering, professional cleaning services, event technology, and film production.

[0004] Typically, the devices for which such battery systems are used are mobile units, and it is therefore advantageous if the battery system is also mobile. The battery system is intended to provide mobile mains voltage. Such a battery system must be particularly flexible and accordingly lightweight and robust for mobile use, even under demanding conditions. In particular, it should be portable and resistant to impacts.

[0005] Depending on the application, different configurations of battery systems are conceivable, in which individual battery cells are connected in series and / or parallel to achieve the desired output power, the desired capacity and a desired voltage profile (DC or AC).

[0006] The underlying object of the invention is to provide a housing for a battery system and a battery system that are particularly robust for mobile use and, in particular, particularly well meet the mechanical requirements of a mobile, portable, and flexibly deployable battery system. This object is achieved according to the invention with the features of the independent claims. Further advantages and practical embodiments are described in connection with the dependent claims.

[0007] A housing according to the invention serves to accommodate a battery system. Here, a battery system is intended to comprise several individual battery modules, each having at least one battery cell and an electronics module. The battery cells are, in particular, cylindrical lithium-ion batteries. In particular, six battery cells are combined to form a battery module. The electronics module has, in particular, a bridge circuit and a control device. The advantage of combining several individual battery modules to form a battery system is that the battery modules are thus present in smaller units and can, for example, be selectively replaced, in contrast to a single battery block.

[0008] The housing has a first housing half and a second housing half, which are directly or indirectly connected to one another. Directly connected to one another means that the two housing halves are in contact with one another and touch one another. With an indirect connection, the contact between the two housing halves is established by at least a third element, e.g. by the battery modules or end caps, which will be explained in more detail below. The housing halves each have at least one cover surface. In particular, the two housing halves can be connected in a connecting direction perpendicular to the cover surfaces. The housing halves are connected to one another in a form-fitting and / or force-fitting manner. The connection can be realized in particular via a screw connection and / or a separate casing.In particular, the longitudinal direction of the battery cells runs from the top surface of the first housing half to the top surface of the second housing half. In particular, the housing comprises additional housing parts in addition to the first housing half and the second housing half.

[0009] The first housing half has first guide structures for positively securing the battery modules, and the second housing half has second guide structures for positively securing the battery modules. The battery modules can be completely secured in the housing with a positive fit, particularly by the two housing halves or, if necessary, an additional casing. The battery modules are securely secured against vibrations in all three spatial directions by the cover surfaces, the first guide structures, and the second guide structures.

[0010] The first guide structures and / or the second guide structures can be formed integrally with the respective housing half. The housing halves are particularly made of plastic and can be easily manufactured with the respective guide structures as an injection-molded part. Alternatively, the guide structures are formed on an insert that is connected to the respective housing half. The respective housing half can, in particular, itself have guide structures or means for positioning the insert in order to realize a clear positioning of the insert in the housing half.

[0011] A housing according to the invention can be manufactured particularly easily and cost-effectively and offers good protection of the battery modules against vibrations and environmental influences.

[0012] In particular, the first guide structures are pins that protrude from the first housing half, and / or the second guide structures are pins that protrude from the second housing half. Pins are defined here as geometries that protrude from the cover surface of the respective housing half and whose extent transverse to their direction of extension is small compared to the dimensions of the housing halves. Pins within the meaning of this application can have round and square geometries. The peripheral surface of the pins can have an open geometry. Pins can be easily manufactured, for example, using an injection molding process.

[0013] In a particularly material-saving manner, the pins can be used for the positive-locking fixation of multiple battery modules and / or for the positive-locking fixation of a battery module in two directions. In particular, the pins are each arranged at a corner of areas intended for battery modules, and preferably at a corner where several areas for battery modules adjoin one another. At least one pin is located in particular at a corner between at least two areas for battery modules. A pin can also be used for the positive-locking fixation of up to four battery modules. For this purpose, the pin has, in particular, a substantially square cross-section.

[0014] To ensure particularly good fixation of the battery modules, the side surfaces of the pins are specifically adapted to the external geometry of the battery modules. Preferably, the pins have at least one inwardly curved side surface. In particular, the pins have four inwardly curved side surfaces. The side surfaces are particularly concave. This allows battery modules with rounded corners to be accommodated and secured with a positive fit.

[0015] It can also be provided that at least one first guide structure and / or a second guide structure, in particular in the form of a pin, is also provided for the positive fixing of a printed circuit board, wherein a corresponding opening for the respective guide structure or the respective pin is formed in the printed circuit board. In particular, the printed circuit board has several square openings.

[0016] In addition, the first housing half and / or the second housing half can have additional guide structures for the positive-locking fixation of a central control unit. An area adjacent to the battery modules can be provided for the central control unit, and the guide structures for fixing the control unit can also be designed as protruding structures on the respective housing half and adapted to the geometry of the central control unit. Alternatively or additionally, guide structures for fixing at least one heat sink can also be arranged or formed on one of the housing halves.

[0017] In a practical embodiment of the housing according to the invention, the first housing half is designed as a plate and the second housing half is also designed as a plate. The plates are spaced from one another, in particular by a front cap and an end cap of the housing. To fix the plates, these are arranged in a casing. In particular, after installation of the battery modules, the casing is pushed over the plates and the end caps and battery modules arranged between them. The casing encases the two housing halves and fixes them in place. A housing with two housing halves as plates offers the advantage that the plates are easy to manufacture and can be flexibly adapted to changes in the arrangement or design of the battery modules or other components, whereby the external design remains the same thanks to the casing.

[0018] Alternatively, the first housing half and the second housing half are a housing shell and a housing cover. The housing shell has a base surface or cover surface and at least one side wall. The housing cover can, in particular, have only one cover surface and is accordingly designed as a plate. Alternatively, the housing cover can also have a side wall.

[0019] A particularly robust housing, which is particularly stable against acting transverse forces, results when the first housing half and the second housing half each have a side wall extending perpendicular to the cover surface, wherein the side walls overlap at least over part of their height. The respective side walls then lie against one another in the installed position and prevent the housing shell and the housing cover from moving in a direction transverse to the connection direction. In particular, the side walls extend far enough that, in the installed position, they touch the opposite cover surface, which acts as a stop to counteract the effect of forces in the connection direction. In an overlapping area in which the side walls overlap, a seal is arranged between the side walls in particular to prevent the ingress of moisture and dirt.

[0020] In a further practical embodiment, the first housing half and / or the second housing half have guide structures for receiving electrical connectors. These guide structures for the connectors enable contact to be established with the battery modules in as many situations as possible. The guide structures serve to positively fix the connectors. Electrical connectors here refer to both connectors for connecting the poles of the battery modules (for power transmission) and connectors for contacting the electronics unit (for transmitting control commands). In particular, the guide structures for receiving the electrical connectors are designed as pins and protrude from the first housing half and / or the second housing half. The electrical connectors have corresponding openings through which the pins can be arranged to protrude.Electrical connectors are primarily connectors for transmitting electrical power.

[0021] In particular, the pins have a round outer contour, allowing the connectors with a corresponding opening to be plugged onto the pins in any orientation. This enables flexible interconnection of the battery modules. Alternatively, the pins and connectors can be designed such that they can only be plugged into one another in one direction, using a poka-yoke design. Such a feature can be a pin, for example, with a projection that interacts with a groove in the connector.

[0022] In particular, the pins are also arranged and designed in such a way that they also protrude between two battery cells of a battery module, so that at the same time a fixation of the electrical connectors and a fixed relative arrangement between the connectors and the battery cells combined in a battery module is possible.

[0023] In particular, the pins feature a thread to enable particularly secure fixation between the battery modules and the connectors. In particular, the pins feature an internal thread into which a screw can be screwed. This screw extends through the pin and through the connectors to the battery modules. This ensures electrical contact between the battery module and the electrical connector, even if the housing is distorted or twisted, for example.

[0024] As an alternative to screwing, the pin can also be spread open so that the adjacent battery modules are additionally held in place by clamping.

[0025] If the first guide structures or second guide structures for the positive connection of the battery modules and the guide structures for accommodating electrical connectors are pins, these extend in particular in one plug-in direction. The assembly of battery modules and electrical connectors (for signal transmission and / or power transmission) can then be carried out particularly easily by placing or plugging them onto the first housing half in one plug-in direction.

[0026] The guide structures for arranging the electrical connectors can also be designed as ribs that laterally border the electrical connectors and guide them laterally. In particular, the electrical connectors can be positively secured by means of these ribs and first or second guide structures.

[0027] In a further practical embodiment of the housing according to the invention, the second guide structures on the second housing half are formed in the form of ribs. Ribs are elongated structures that protrude from the second housing half. The ribs are particularly formed on the housing half in such a way that they are arranged so as to protrude between battery cells of a battery module, thus ensuring a uniform spacing between the battery modules.

[0028] In particular, the second guide structures have a first group of ribs and a second group of ribs, each of which extends perpendicular to one another. The first group of ribs extends on a cover surface, each rotated by 90° to the second group of ribs. In particular, two adjacent ribs are arranged such that they form a "T." This "T" formed from two ribs is particularly advantageous for battery modules that have six battery cells with two rows of three battery cells each and are connected such that two battery cells are connected in one row and the remaining two battery cells are arranged at one end of each of the two rows. The battery cells are divided into pairs by the ribs according to their connection.

[0029] In a practical embodiment of the housing according to the invention, the ribs each have insertion bevels at their ends to ensure particularly good insertion between the individual battery cells of a battery module. Alternatively or additionally, some or all of the first guide structures and / or second guide structures can be designed as conically tapered pins. This means that the wall surfaces of these pins run obliquely to the direction of extension of the pin. The pins increase their outer diameter toward the cover surface of the respective housing half. This conicity allows for tolerance compensation and a particularly good form fit of the battery modules.

[0030] In a further practical embodiment of the housing according to the invention, this housing is surrounded by another outer housing. The outer housing serves to provide mechanical protection and protection against environmental influences such as dust and moisture. Furthermore, the outer housing can be a system housing, e.g., a tool case. The outer housing can have features for securing it or integrating it into a storage / stacking system.

[0031] The housing is particularly practical if at least one handle extends between the first housing half and the second housing half. The handle can be designed such that it is formed within the outer contour of the first housing half and the second housing half. The handle does not protrude laterally relative to the outer contour of the housing halves. In particular, at least one side surface of a housing half has a curve inwards relative to the outer contour, wherein a handle is arranged in the free space between the cover surfaces of the housing halves, which handle extends in particular from the first cover surface to the second cover surface. The handle can be a cylindrical element. The handle element can be ergonomically shaped.

[0032] The housing can have further features on its outer surface, such as connections for consumers and connections for charging the battery cells, and display devices. The outer surface can have a device for winding a cable. In particular, all connections, display devices, or winding devices are arranged within the outer contour of the housing and do not protrude laterally from the outer contour. The outer contour is defined in particular by the cover surfaces of the two housing halves. The invention also relates to a battery system having a plurality of battery modules, each comprising at least one battery cell and one electronic module, wherein the battery modules are arranged in a housing as described above.In the housing, the battery modules are positively fixed by the first guide structures of the first housing half and the second guide structures of the second housing half and are securely mounted against shocks and vibrations.

[0033] The battery modules are arranged in the housing, in particular in several rows, and adjacent battery modules arranged in a row are electrically connected to one another. In particular, a central control device is arranged in the housing, and the central control device contacts two battery modules, with the additional battery modules connected between them.

[0034] As already described above, the first guide structures and / or second guide structures are designed in particular in the form of pins, wherein the pins are each arranged at the corners of at least one battery module. The pins can also be used to secure a printed circuit board.

[0035] Alternatively, the second guide structures can be designed in the form of ribs and can each engage between two battery cells of a battery module in such a way that the battery cells are each divided into pairs corresponding to their interconnection.

[0036] The battery modules are electrically connected in particular via electrical connectors. The electrical connectors can be used to transmit power and / or control commands. The power transmission and the control commands can be implemented via separate connectors or via a common connector. The electrical connecting element is in particular a flexible printed circuit board for transmitting the signal. The printed circuit board can be designed in a meandering shape for further tolerance compensation. For the transmission of power, in particular an electrical connector in the form of a flat metal strip is provided. In a further practical embodiment, guide structures are provided for the arrangement of electrical connectors. In particular, such guide structures are designed as pins, and these pins engage in a corresponding opening in an electrical connector.In particular, these pins extend into the battery modules and are arranged between four adjacent battery cells.

[0037] Alternatively, such guide structures can also be designed as ribs, which are located laterally on the electrical connectors.

[0038] It is particularly advantageous if the guide structures serve to guide or secure multiple components. In particular, the first guide structures serve to secure battery modules and circuit boards, and / or the guide structures for accommodating the electrical connectors also serve to guide or secure the battery modules.

[0039] In a practical embodiment of the battery system according to the invention, an electrical connecting element has resilient contacts for contacting a battery module or the electronic module.

[0040] In particular, the electrical connectors are arranged between the battery modules and a cover surface of a housing shell. This results in a particularly simple design and easy assembly.

[0041] Assembly is made easier when the battery modules and electrical connectors are mounted in the housing in a common plug-in direction.

[0042] The invention also relates to a method wherein a first housing half is provided with first guide structures for the positive-locking fixation of the battery modules and guide structures for the arrangement of electrical connectors, and wherein a plurality of battery modules and electrical connectors are arranged on the first housing half in a common plug-in direction. Subsequently, the second housing half is placed on the first housing half, and the first housing half and second housing half are connected in a positive-locking manner.

[0043] Further practical embodiments and advantages are described below in conjunction with the figures. They show:

[0044] Fig. 1 shows a battery system according to a first embodiment in a perspective view obliquely from above,

[0045] Fig. 2 shows a first housing half of the battery system according to the first embodiment of Fig. 1 in a perspective view obliquely from above,

[0046] Fig. 3 shows a second housing half of the battery system according to the first embodiment of Fig. 1 in a perspective view obliquely from above,

[0047] Fig. 4 shows the section marked IV from Fig. 2 in a plan view,

[0048] Fig. 5 shows a battery system according to a second embodiment in a perspective view obliquely from the front,

[0049] Fig. 6 shows a battery system according to a third embodiment in a perspective view obliquely from above,

[0050] Fig. 7 shows a first housing half of the battery system according to the third embodiment of Fig. 6 in a perspective view obliquely from above,

[0051] Fig. 8 shows a second housing half of the battery system according to the third embodiment of Fig. 6 in a perspective view obliquely from above,

[0052] Fig. 9 is an exploded view of a fourth embodiment of a battery system, Fig. 10 is a perspective view of the battery system from Fig. 9,

[0053] Fig. 11 shows a first housing half of the battery system according to the fourth embodiment of Fig. 10 in a perspective view obliquely from above,

[0054] Fig. 12 shows a second housing half of the battery system according to the fourth embodiment of Fig. 10 in a perspective view obliquely from above, and

[0055] Fig. 13 shows a battery system according to a fifth embodiment in a perspective view obliquely from above.

[0056] A first embodiment of a battery system 10 is shown in Figs. 1 to 4.

[0057] The battery system 10 comprises a housing 12, the exterior of which can be seen in Fig. 1. The housing 12 is formed here by a first housing half 14 in the form of a housing cover (see Fig. 2) and a second housing half 16 in the form of a housing shell (see Fig. 3).

[0058] The outer surfaces of the housing 12 form a cover surface 18 of the first housing half 14 and a cover surface 20 of the second housing half 16 as well as a side wall 22 of the first housing half 14 and a side wall 24 of the second housing half 16. The first housing half 14 and second housing half 16 are connected to one another by means of screws (not shown).

[0059] The side walls 22, 24 here have two inwardly curved regions 26, forming a free space 28 between each of the two cover surfaces 18, 20. A cylindrical handle 30 is arranged in this free space 28, extending from the first cover surface 18 to the second cover surface 20. Furthermore, the outer side of the housing 12 has at least one connection 32 for connecting a consumer (additional connections and display devices are not shown here).

[0060] Several battery modules 34 are arranged within the housing 12. Three battery modules 34 are shown here as an example. The battery modules 34, in turn, comprise six battery cells 36 and an electronic module (not visible). The battery modules 34 are arranged in several rows within the housing. Here, four rows, each with five battery modules 34, are formed.

[0061] In this first embodiment, the first housing half 14 is designed as a plate and has first guide structures 38 in the form of pins 40 (see also Fig. 40). The pins 40 protrude from the cover surface 18. The pins 40 are arranged here at the corners of the areas for the battery modules 34. Several pins 40 are arranged between two or four battery modules 34. The pins 34 are square in cross-section (or in a plan view), with the side walls 42 of the pins 40 curved inwards. The pins 40 are thus adapted to the rounded outer contour of the battery modules 34 (see also Fig. 4) and can thus fix the battery modules 34 particularly well within the plane of the cover surface 18 in a form-fitting manner.

[0062] The second housing half 16 has further features for the positive fixation of the battery modules 34. The second housing half 16 has second guide structures 44 in the form of ribs 46a, 46b (see Fig. 3). There is a first group of ribs 46a and a second group of ribs 46b, wherein the ribs 46a of the first group and the ribs 46b of the second group are aligned perpendicular to each other on the cover surface 18. Adjacent ribs 46a, 46b each form a "T." One rib 46a of the first group and one rib 46b of the second group engage with a battery module 34. The ribs 46a, 46b engage here in such a way that two battery cells 36 connected to one another via cell connectors 37 are spaced from the other battery cells 36 via a rib 46a, 46b.

[0063] For the electrical connection of the battery modules 34 and the transmission of power, electrical connectors 48 are arranged between the cover surface 18 of the first housing half 14 and the battery modules 34. The electrical connectors 48 for transmitting power are flat metal strips. In addition, electrical connectors 50, 52 are provided to interconnect the rows of battery modules 34 and to connect the outer rows to a central control unit 54. To secure and guide the electrical connectors 48, 50, 52 for transmitting power, the first housing half 14 has guide structures 56 for the electrical connectors. These are circular pins 58 that engage in openings 60 of the connectors 48, 50, 52 (see Fig. 4).The pins 58 of these guide structures 56 also protrude far enough to extend between four adjacent battery cells 36 of a battery module 34, thus providing additional centering. The connectors 48 each run diagonally between two rows of guide structures 56, 58.

[0064] In this embodiment, the battery modules 36 are controlled via an electrical connector 62 in the form of a printed circuit board 64 arranged in the first housing half 14. The printed circuit board 64 has spring-loaded contacts 65 that are connected to corresponding contacts of the battery modules 34 (not visible). The printed circuit boards 64 are each connected at one end to the central control module 54. Square recesses 66 are formed in the printed circuit board 64, through which the first guide structures 38 protrude and additionally secure the printed circuit board 64 in a form-fitting manner.

[0065] The battery modules 34 and the electrical connectors for the power 48, 50, 52 and the circuit board 64 are arranged in a common plugging direction S on the first housing half 14.

[0066] The positive fixing of the control module 54 is achieved via guide structures 55.

[0067] The first guide structures 38 and the guide structures 56 for the electrical connectors 48, 50, 52 in the first housing half 14 and the second guide structures 44 of the second housing half 16 are each formed integrally with the respective housing half 14, 16. Furthermore, heat sinks 68 are arranged within the housing 12 and are fixed by guide structures 70 formed integrally with the respective housing half 14, 16.

[0068] In the following, the same reference numerals are used to describe further embodiments for identical or at least functionally equivalent components as for the description of the first embodiment.

[0069] In Fig. 5, a second embodiment of a battery system 10 is shown, wherein the housing 12, analogous to the first embodiment, has a first housing half 14 in the form of a cover and a second housing half 16 in the form of a housing shell.

[0070] In this second embodiment, the free space 28 between the first cover surface 18 and the second cover surface 20 is larger than in the first embodiment. Within the outer contour defined by the cover surfaces 18, 20, in addition to the two handles 30, a device 72 for winding a cable is formed. A connector 74 is arranged centrally in the device 72.

[0071] Figs. 6 to 9 show a third embodiment of a battery system. The housing also has a first housing half and a second housing half. The difference from the first embodiment lies primarily in the fact that here the first housing half 14 is designed as a housing shell with high side walls 22, and the second housing half 16 is designed as a housing cover with a lower side wall 24. The side wall 22 of the first housing half 14 here has three free spaces 28 for arranging a handle 30 each.

[0072] The first guide structures 38 and second guide structures 44 as well as the guide structures 56 for guiding the electrical connectors 48, 50, 52 are identical to the guide structures 38, 44, 56 described in connection with the first embodiment.

[0073] The arrangement of the electrical connectors 48 for transmission is also different here; here, the connectors 48 run along a row of guide structures 56, 58 (see Fig. 5). The connectors 48 are arranged offset in two parallel rows. This illustrates the flexibility of the housing 12, which easily enables different wiring options.

[0074] Figures 9 to 12 illustrate a fourth embodiment of a battery system 10. This fourth embodiment differs from the previous embodiments, particularly in the structure of the housing 10.

[0075] The housing 12 here has a first housing half 14 in the form of a plate 76 and a second housing half 16 in the form of a plate 78. The two plates 76, 78 are arranged in a casing 80, and the end faces are each closed by an end cap 82, 84. The spacing of the plates 76, 78 (or cover surfaces 18, 20) is achieved by the battery modules 34 arranged between the plates 76, 78 and by the end caps 82, 84. The casing 80 and the end caps 82, 84 fix the plates 76, 78 in a form-fitting manner.

[0076] Here, too, the first housing half 14 has first guide structures 38 in the form of pins 40. The pins 40 have an open geometry here, i.e., their outer surface is not closed. This allows the pins 40 to deflect slightly and enable tolerance compensation. The side walls 42 of the pins 40 are, as described in connection with Figs. 1 to 4, curved inwards in order to positively fix the battery modules 34 with rounded corners. Pins 40 at the end of a row for the battery modules 34 have only two side surfaces 42, since they only border on two battery modules 34. Pins 40 that border on four battery modules 34 have four inwardly curved side surfaces 42.

[0077] The second housing half 16 has second guide structures 44, which here are also designed as pins 40. The pins 40 adjacent to four battery modules have a square cross-section with inwardly curved side surfaces 42. Pins 40 at the end of a row have only two side surfaces and are designed in the shape of a point.

[0078] The first guide structures 38 and second guide structures 44 are formed integrally with the respective housing half 14, 16. The control signal is transmitted via an electrical connector 62 in the form of a flexible, meandering printed circuit board 86. The printed circuit board 86 is fixed via guide structures 56 for guiding the electrical connectors, with the printed circuit board 86 resting on the first guide structures 38 and on the ribs 88 formed on the first housing half 14. The ribs 88 and pins 40 are designed such that they form a meandering course into which the printed circuit board 86 is inserted. The printed circuit board 86 has spring-loaded contacts 65 for easy connection to the battery modules 34. The power is transmitted via electrical connectors (not shown here), each of which extends between two terminals 89 of adjacent battery modules 34 (see Fig. 12).Flat cables are particularly intended as electrical connectors.

[0079] Here, too, a central control unit 54 is provided, which is mounted on the first housing half 14 and the second housing half 16 via suitable guide structures 55.

[0080] Further elements, such as heat sinks 68 and terminals 32, are also arranged in the housing 12. The terminals 32 are arranged in the end caps 82, 84 (not shown in detail).

[0081] In the fourth embodiment, the handles 30 are formed by through-openings 90 formed on the end caps 82, 84, which are positioned in an opening 92 in the side wall of the casing 80. The end caps 82, 84 also have a cylindrical handle 30.

[0082] The fifth embodiment in Fig. 13 differs from the fourth embodiment in the external design of the housing 12 and in particular the handles 30. Each end cap 82, 84 is integrally connected to a handle 30. The handles 30 have support sections 94 with which they rest on the outside of the casing 80. Furthermore, two separate handles 30 are arranged on the casing 80, which also rest on the outside of the casing 80 with a support section 94. List of Reference Symbols

[0083] Battery system

[0084] Housing first housing half second housing half

[0085] Cover surface (first housing half)

[0086] Cover surface (second housing half)

[0087] Side panel (first housing half)

[0088] Side wall (second housing half) curved area

[0089] Free space

[0090] Handle

[0091] Connection

[0092] Battery module

[0093] Battery cell

[0094] Cell connector first management structure

[0095] Pin

[0096] Side surface (pin) second guide structure a, 46b rib electrical connector (power) electrical connector (power) electrical connector (power) central control device

[0097] Management structure (for central control facility)

[0098] Guide structure (for electrical connectors)

[0099] Pin

[0100] Opening electrical connectors (signal)

[0101] Printed circuit board spring contact

[0102] recess

[0103] Heatsink guide structure (for heatsink)

[0104] Device for winding a cable

[0105] Connection

[0106] plate

[0107] plate

[0108] Wrapping

[0109] End cap

[0110] End cap

[0111] circuit board

[0112] rib

[0113] Connection

[0114] Through hole (in the end cap)

[0115] opening

[0116] Support section

[0117] Plug-in direction

Claims

Claims: Housing for a battery system (10) with several battery modules (34), each with at least one battery cell (36), wherein the housing (12) comprises a first housing half (14) and a second housing half (16), wherein the first housing half (14) has first guide structures (38) for positive locking of the battery modules (34) and wherein the second housing half (16) has second guide structures (44) for positive locking of the battery modules (34). Housing according to the preceding claim, characterized in that the first guide structures (38) are pins (40) projecting from the first housing half (14) and / or the second guide structures (44) are pins (40) projecting from the second housing half (16). Housing according to the preceding claim, characterized in that the pins (40) are each arranged at a corner of areas provided for battery modules (34).Housing according to one of the two preceding claims, characterized in that the pins (40) have at least one inwardly curved side surface (42). Housing according to one of the preceding claims, characterized in that the first housing half (14) and / or the second housing half (16) have further guide structures (55) for positive locking fixation of a central control device (56). Housing according to one of the preceding claims, characterized in that the first housing half (14) is designed as a plate (76) and the second Housing half (16) is also designed as a plate (78), and the plates (76, 78) are arranged in a casing (80) such that the battery modules (34) can be fixed by the casing (80) and the two plates (76, 78). Housing according to any one of the preceding claims 1 to 5, characterized in that the first housing half (14) and the second housing half (16) are a housing shell and a housing cover, respectively. Housing according to any one of the preceding claims, characterized in that the first housing half (14) and the second housing half (16) each have a side wall (22, 24), wherein the side walls (22, 24) overlap at least over a portion of their height. Housing according to one of the preceding claims, characterized in that the first housing half (14) and / or the second housing half (16) has guide structures (38, 56) for receiving electrical connectors (48, 50, 52, 62).Housing according to the preceding claim, characterized in that the guide structures (38, 56) for receiving the electrical connectors (48, 50, 52, 62) are designed as pins (40, 58) and project from the first housing half (14) and / or the second housing half (16). Housing according to the preceding claim, characterized in that the pins (58) have a thread for fixing the battery modules (34). Housing according to any one of the preceding claims 9 to 11, characterized in that. The first guide structures (38) and the guide structures (56) for receiving electrical connectors (50, 52, 54) extend in a plug-in direction (S). Housing according to one of the preceding claims, characterized in that at least a portion of the second guide structures (44) are formed in the form of ribs (46a, 46b). Housing according to the preceding claim, characterized in that the second guide structures (44) have a first group of ribs (46a) and a second group of ribs (46b), each extending perpendicular to the other. Housing according to one of the preceding claims, characterized in that at least a portion of the first guide structures (38) and / or the second guide structures (44) are formed as tapered pins. Housing according to one of the preceding claims, characterized in that the housing (12) is surrounded by a further outer housing.Housing according to one of the preceding claims, characterized in that the housing (12) has at least one handle (30) which extends within the outer contour of the housing (12). Battery system with several battery modules (34), each comprising at least one battery cell (36) and an electronic module, characterized in that the battery modules (34) are arranged in a housing (12) according to one of the preceding claims 1 to 17. Battery system according to the preceding claim, characterized in that the first guide structures (38) and / or the second. Guide structures (44) are formed in the form of pins (40) and are each arranged at the corner of at least one battery module (34). Battery system according to one of the two preceding claims, characterized in that the second guide structures (44) are formed in the form of ribs (46a, 46b), wherein the ribs (46a, 46b) each engage between two battery cells (36) of a battery module (34). Battery system according to one of the three preceding claims, characterized in that Guide structures (38, 56) for arranging electrical connectors (48, 50, 52, 62) are designed as pins (40, 58) and engage in a corresponding opening (60, 66) of an electrical connector (48, 50, 52, 62). Battery system according to one of the preceding claims, characterized in that Guide structures (56) for arranging electrical connectors (62) are designed as ribs (88) and the ribs (88) abut laterally against an electrical connector (62). Battery system according to one of the preceding claims, characterized in that the electrical connectors (48, 50, 52, 62) are each arranged between the battery modules (34) and a cover surface (18, 26) of a housing half (14, 16). Battery system according to one of the preceding claims, characterized in that the battery modules (34) and the electrical connectors (48, 50, 52, 62) are mounted in the housing (12) in a common insertion direction (S).

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